Scalable Deniable Group Key Establishment

Kashi Neupane; Rainer Steinwandt; Adriana Suarez Corona

Paper 2012/504

Scalable Deniable Group Key Establishment

Kashi Neupane, Rainer Steinwandt, and Adriana Suarez Corona

Abstract

The popular Katz-Yung compiler from CRYPTO 2003 can be used to transform unauthenticated group key establishment protocols into authenticated ones. In this paper we present a modication of Katz and Yung's construction which maintains the round complexity of their compiler, but for "typical" unauthenticated group key establishments adds authentication in such a way that deniability is achieved as well. As an application, a deniable authenticated group key establishment with three rounds of communication can be constructed.

Metadata

Available format(s): PDF
Publication info: Published elsewhere. This is the full version of the work to appear in Proceedings of 5th International Symposium on Foundations & Practice of Security
Keywords: Group key establishment Deniability
Contact author(s): asuarezc @ fau edu
History: 2012-09-03: received
Short URL: https://ia.cr/2012/504
License: CC BY

BibTeX

@misc{cryptoeprint:2012/504,
      author = {Kashi Neupane and Rainer Steinwandt and Adriana Suarez Corona},
      title = {Scalable Deniable Group Key Establishment},
      howpublished = {Cryptology {ePrint} Archive, Paper 2012/504},
      year = {2012},
      url = {https://eprint.iacr.org/2012/504}
}